Pieter R. van Oel, Vincent O. Odongo, Dawit W. Mulatu, Jane Ndungu, Francis K. Muthoni, Job Ogada, George Khroda, Jude M. Mathooko, Robert Becht, Nzula Kitaka, Japheth O. Onyando, and Anne van der Veen.(2014)
Pieter R. van Oel, Vincent O. Odongo, Dawit W. Mulatu, Jane Ndungu, Francis K. Muthoni, Job Ogada, George Khroda, Jude M. Mathooko, Robert Becht, Nzula Kitaka, Japheth O. Onyando, and Anne van der Veen. (1)